Method for controlling the temperature of an electrochemical energy storage system

Abstract

Method for controlling the temperature of an electrochemical energy storage system ( 100 ), wherein the energy storage system ( 100 ) comprises at least two electrochemical energy stores ( 101, 102 ) and an air-conditioning apparatus ( 114 ) having an air-conditioning circuit ( 115 ) for air-conditioning the energy store ( 101, 102 ).

The invention claimed is: 
     
       1. A method for controlling the temperature of an electrochemical energy storage system ( 100 ), wherein the energy storage system ( 100 ) has a first electrochemical energy store ( 101 ) and a second electrochemical energy store ( 102 ), a first temperature sensor, a second temperature sensor, a controller, and an air-conditioning apparatus ( 114 ) having an air-conditioning circuit ( 115 ) for air-conditioning the first and second energy stores ( 101 ,  102 ), the method comprising:
 (S 101 ) capturing, via the first temperature sensor, a first temperature (T 1 )-of the first electrochemical energy store ( 101 ); 
 (S 102 ) capturing, via the second temperature sensor, a second temperature (T 2 ) of the second electrochemical energy store ( 102 ); 
 determining a temperature control requirement according to the first temperature (T 1 ) and the second temperature (T 2 ); and 
 (S 103 ) heating the second electrochemical energy store ( 102 ) using an excess amount of heat of the first electrochemical energy store ( 101 ) by operating the air-conditioning apparatus ( 114 ) according to the temperature control requirement. 
 
     
     
       2. The method according to  claim 1 , further comprising:
 (S 104 ) controlling the air-conditioning apparatus ( 114 ) to heat (T+++, T++, T+) the first and second energy stores ( 101 ,  102 ) by the air-conditioning circuit ( 115 ) if the first temperature (T 1 ) and the second temperature (T 2 ) are in a first temperature range. 
 
     
     
       3. The method according to  claim 1 , further comprising:
 (S 105 ) controlling the air-conditioning apparatus ( 114 ) to cool (T−−−, T−−, T−) the energy stores ( 100 ,  101 ) by the air-conditioning circuit ( 115 ) when the first temperature (T 1 ) and the second temperature (T 2 ) are in a second temperature range. 
 
     
     
       4. The method according to  claim 1 , further comprising:
 (S 106 ) controlling the air-conditioning apparatus ( 114 ) to circulate (Tc) the air-conditioning circuit ( 115 ) if the first temperature (T 1 ) and the second temperature (T 2 ) are in a third temperature range. 
 
     
     
       5. The method according to  claim 1 , further comprising:
 (S 107 ) stipulating a circulation direction and/or a circulation speed of the air-conditioning circuit ( 115 ). 
 
     
     
       6. The method according to  claim 1 , further comprising:
 (S 108 ) switching off (S 0 ) the air-conditioning apparatus ( 114 ) when the first temperature (T 1 ) and the second temperature (T 2 ) are in a fourth temperature range, or if no temperature control requirement is captured. 
 
     
     
       7. The electrochemical energy storage system ( 100 ) according to  claim 1 , wherein at least one of the electrochemical energy stores ( 101 ,  102 ) comprises at least one lithium ion, lithium sulfur, lithium air and/or lithium polymer cell, a nickel metal hydride and/or lead acid battery, a capacitor and/or a solid electrolyte battery. 
     
     
       8. An electrochemical energy storage system comprising:
 a first electrochemical energy store; 
 a second electrochemical energy store; 
 a first temperature sensor; 
 a second temperature sensor; 
 an air-conditioning apparatus having an air-conditioning circuit for air-conditioning the first and second energy stores; 
 and a controller programmed to capture, via the first temperature sensor, a first temperature of the first electrochemical energy store; 
 capture, via the second temperature sensor, a second temperature of the second electrochemical energy store; 
 determine a temperature control requirement according to the first temperature and the second temperature; and 
 heat the second electrochemical energy store using an excess amount of heat of the first electrochemical energy store by operating the air-conditioning apparatus according to the temperature control requirement.